Patents by Inventor Kugsun Hong

Kugsun Hong has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Method of preparing zinc silicate-based phosphor and zinc silicate-based phosphor prepared using the method
    Patent number: 7901651
    Abstract: Provided are a method of preparing a zinc silicate-based phosphor and a zinc silicate-based phosphor prepared using the method. The method includes: (a) preparing a solution including a Zn precursor compound and a Si precursor compound; (b) adding a coprecipitant to the solution to form precipitation; and (c) heat treating the solution in which the precipitation is formed to synthesize zinc silicate (Zn2SiO4), wherein a solvent of the solution including the Zn precursor compound and the Si precursor compound includes at least one selected from the group consisting of ethanol, methanol, 1-propanol, 2-propanol, 1-butanol, 2-butanol, 1-pentanol, 2-pentanol, 3-pentanol, 1-hexanol, and 1-heptanol, and hydrazine is used as the coprecipitant.
    Type: Grant
    Filed: October 23, 2008
    Date of Patent: March 8, 2011
    Assignees: Samsung SDI Co., Ltd., Seoul National University Industry Foundation
    Inventors: Kugsun Hong, Soonjae Kwon, Hyunsik Kim, Sooyeon Seo, Junhong Noh, Heesuk Roh, Jaesul An
  • Method of preparing zinc silicate-based phosphor and zinc silicate-based phosphor prepared using the method
    Publication number: 20090285742
    Abstract: Provided are a method of preparing a zinc silicate-based phosphor and a zinc silicate-based phosphor prepared using the method. The method includes: (a) preparing a solution including a Zn precursor compound and a Si precursor compound; (b) adding a coprecipitant to the solution to form precipitation; and (c) heat treating the solution in which the precipitation is formed to synthesize zinc silicate (Zn2SiO4), wherein a solvent of the solution including the Zn precursor compound and the Si precursor compound includes at least one selected from the group consisting of ethanol, methanol, 1-propanol, 2-propanol, 1-butanol, 2-butanol, 1-pentanol, 2-pentanol, 3-pentanol, 1-hexanol, and 1-heptanol, and hydrazine is used as the coprecipitant.
    Type: Application
    Filed: October 23, 2008
    Publication date: November 19, 2009
    Inventors: Kugsun Hong, Soonjae Kwon, Hyunsik Kim, Sooyeon Seo, Junhong Noh, Heesuk Roh, Jaesul An
  • Dielectric ceramic compositions
    Patent number: 6242375
    Abstract: Dielectric ceramic compositions for microwave application which are expressed as (1-x)ZnNb2O6- xTiO2 and designed with mole fractions of TiO2 (x=0.2 to 0.8). CuO of 0.5 to 12.0 % by weight of the total weight of the compositions is added to the compositions. At least one additive oxide of 0.05 to 5.0% by weight of the total weight among V2O5, Sb2O5, Bi2O3, B2O3, NiO, WO3, AgNO3, ZnO, and MgO is added to the compositions. They have good sintering and dielectric characteristics and made through simple manufacturing processes, and lower the production costs.
    Type: Grant
    Filed: February 11, 1999
    Date of Patent: June 5, 2001
    Assignee: Amecs Co., Ltd.
    Inventors: Kugsun Hong, Hyukjoon Yoon, Sooncheun Byun, Seoyong Cho, Dongwan Kim, Taeguen Kim, Deukyang Kim, Jongwoon Moon, Hyojong Lee, Byungkyu Kim